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libaom v3.6.0 release candidate 2

libaom v3.6.0 release candidate 1

2022-08-31 v3.5.0

  This release is ABI compatible with the last one, including speedup and memory
  optimizations, and new APIs and features.
  - New Features
    * Support for frame parallel encode for larger number of threads. --fp-mt
      flag is available for all build configurations.
    * New codec control AV1E_GET_NUM_OPERATING_POINTS
  - Speedup and Memory Optimizations
    * Speed-up multithreaded encoding for good quality mode for larger number of
      threads through frame parallel encoding:
      o 30-34% encode time reduction for 1080p, 16 threads, 1x1 tile
        configuration (tile_rows x tile_columns)
      o 18-28% encode time reduction for 1080p, 16 threads, 2x4 tile
        configuration
      o 18-20% encode time reduction for 2160p, 32 threads, 2x4 tile
        configuration
    * 16-20% speed-up for speed=6 to 8 in still-picture encoding mode
    * 5-6% heap memory reduction for speed=6 to 10 in real-time encoding mode
    * Improvements to the speed for speed=7, 8 in real-time encoding mode
    * Improvements to the speed for speed=9, 10 in real-time screen encoding
      mode
    * Optimizations to improve multi-thread efficiency in real-time encoding
      mode
    * 10-15% speed up for SVC with temporal layers
    * SIMD optimizations:
      o Improve av1_quantize_fp_32x32_neon() 1.05x to 1.24x faster
      o Add aom_highbd_quantize_b{,_32x32,_64x64}_adaptive_neon() 3.15x to 5.6x
        faster than "C"
      o Improve av1_quantize_fp_64x64_neon() 1.17x to 1.66x faster
      o Add aom_quantize_b_avx2() 1.4x to 1.7x faster than aom_quantize_b_avx()
      o Add aom_quantize_b_32x32_avx2() 1.4x to 2.3x faster than
        aom_quantize_b_32x32_avx()
      o Add aom_quantize_b_64x64_avx2() 2.0x to 2.4x faster than
        aom_quantize_b_64x64_ssse3()
      o Add aom_highbd_quantize_b_32x32_avx2() 9.0x to 10.5x faster than
        aom_highbd_quantize_b_32x32_c()
      o Add aom_highbd_quantize_b_64x64_avx2() 7.3x to 9.7x faster than
        aom_highbd_quantize_b_64x64_c()
      o Improve aom_highbd_quantize_b_avx2() 1.07x to 1.20x faster
      o Improve av1_quantize_fp_avx2() 1.13x to 1.49x faster
      o Improve av1_quantize_fp_32x32_avx2() 1.07x to 1.54x faster
      o Improve av1_quantize_fp_64x64_avx2()  1.03x to 1.25x faster
      o Improve av1_quantize_lp_avx2() 1.07x to 1.16x faster
  - Bug fixes including but not limited to
    * aomedia:3206 Assert that skip_width > 0 for deconvolve function
    * aomedia:3278 row_mt enc: Delay top-right sync when intraBC is enabled
    * aomedia:3282 blend_a64_*_neon: fix bus error in armv7
    * aomedia:3283 FRAME_PARALLEL: Propagate border size to all cpis
    * aomedia:3283 RESIZE_MODE: Fix incorrect strides being used for motion
      search
    * aomedia:3286 rtc-svc: Fix to dynamic_enable spatial layers
    * aomedia:3289 rtc-screen: Fix to skipping inter-mode test in nonrd
    * aomedia:3289 rtc-screen: Fix for skip newmv on flat blocks
    * aomedia:3299 Fix build failure with CONFIG_TUNE_VMAF=1
    * aomedia:3296 Fix the conflict --enable-tx-size-search=0 with nonrd mode
      --enable-tx-size-search will be ignored in non-rd pick mode
    * aomedia:3304 Fix off-by-one error of max w/h in validate_config
    * aomedia:3306 Do not use pthread_setname_np on GNU/Hurd
    * aomedia:3325 row-multithreading produces invalid bitstream in some cases
    * chromium:1346938, chromium:1338114
    * compiler_flags.cmake: fix flag detection w/cmake 3.17-3.18.2
    * tools/*.py: update to python3
    * aom_configure.cmake: detect PIE and set CONFIG_PIC
    * test/simd_cmp_impl: use explicit types w/CompareSimd*
    * rtc: Fix to disable segm for aq-mode=3
    * rtc: Fix to color_sensitivity in variance partition
    * rtc-screen: Fix bsize in model rd computation for intra chroma
    * Fixes to ensure the correct behavior of the encoder algorithms (like
      segmentation, computation of statistics, etc.)

v3.5.0 Release Candidate 1

Bug: aomedia:3313

Release v3.4.0 Fluttershy

2022-06-17 v3.4.0
  This release includes compression efficiency and perceptual quality
  improvements, speedup and memory optimizations, and some new features.
  There are no ABI or API breaking changes in this release.

  - New Features
    * New --dist-metric flag with "qm-psnr" value to use quantization
      matrices in the distortion computation for RD search. The default
      value is "psnr".
    * New command line option "--auto-intra-tools-off=1" to make
      all-intra encoding faster for high bit rate under
      "--deltaq-mode=3" mode.
    * New rate control library aom_av1_rc for real-time hardware
      encoders. Supports CBR for both one spatial layer and SVC.
    * New image format AOM_IMG_FMT_NV12 can be used as input to the
      encoder. The presence of AOM_IMG_FMT_NV12 can be detected at
      compile time by checking if the macro AOM_HAVE_IMG_FMT_NV12 is
      defined.
    * New codec controls for the encoder:
      o AV1E_SET_AUTO_INTRA_TOOLS_OFF. Only in effect if
        --deltaq-mode=3.
      o AV1E_SET_RTC_EXTERNAL_RC
      o AV1E_SET_FP_MT. Only supported if libaom is built with
        -DCONFIG_FRAME_PARALLEL_ENCODE=1.
      o AV1E_GET_TARGET_SEQ_LEVEL_IDX
    * New key-value pairs for the key-value API:
      o --auto-intra-tools-off=0 (default) or 1. Only in effect if
        --deltaq-mode=3.
      o --strict-level-conformance=0 (default) or 1
      o --fp-mt=0 (default) or 1. Only supported if libaom is built
        with -DCONFIG_FRAME_PARALLEL_ENCODE=1.
    * New aomenc options (not supported by the key-value API):
      o --nv12

  - Compression Efficiency Improvements
    * Correctly calculate SSE for high bitdepth in skip mode, 0.2% to
      0.6% coding gain.
    * RTC at speed 9/10: BD-rate gain of ~4/5%
    * RTC screen content coding: many improvements for real-time screen
      at speed 10 (quality, speedup, and rate control), up to high
      resolutions (1080p).
    * RTC-SVC: fixes to make intra-only frames work for spatial layers.
    * RTC-SVC: quality improvements for temporal layers.
    * AV1 RT: A new passive rate control strategy for screen content, an
      average of 7.5% coding gain, with some clips of 20+%. The feature
      is turned off by default due to higher bit rate variation.

  - Perceptual Quality Improvements
    * RTC: Visual quality improvements for high speeds (9/10)
    * Improvements in coding quality for all intra mode

  - Speedup and Memory Optimizations
    * ~10% speedup in good quality mode encoding.
    * ~7% heap memory reduction in good quality encoding mode for speed
      5 and 6.
    * Ongoing improvements to intra-frame encoding performance on Arm
    * Faster encoding speed for "--deltaq-mode=3" mode.
    * ~10% speedup for speed 5/6, ~15% speedup for speed 7/8, and
      ~10% speedup for speed 9/10 in real time encoding mode
    * ~20% heap memory reduction in still-picture encoding mode for
      360p-720p resolutions with multiple threads
    * ~13% speedup for speed 6 and ~12% speedup for speed 9 in
      still-picture encoding mode.
    * Optimizations to improve multi-thread efficiency for still-picture
      encoding mode.

  - Bug Fixes
    * b/204460717: README.md: replace master with main
    * b/210677928: libaom disable_order is surprising for
      max_reference_frames=3
    * b/222461449: -DCONFIG_TUNE_BUTTERAUGLI=1 broken
    * b/227207606: write_greyscale writes incorrect chroma in highbd
      mode
    * b/229955363: Integer-overflow in linsolve_wiener
    * https://crbug.com/aomedia/2032
    * https://crbug.com/aomedia/2397
    * https://crbug.com/aomedia/2563
    * https://crbug.com/aomedia/2815
    * https://crbug.com/aomedia/3009
    * https://crbug.com/aomedia/3018
    * https://crbug.com/aomedia/3045
    * https://crbug.com/aomedia/3101
    * https://crbug.com/aomedia/3130
    * https://crbug.com/aomedia/3173
    * https://crbug.com/aomedia/3184
    * https://crbug.com/aomedia/3187
    * https://crbug.com/aomedia/3190
    * https://crbug.com/aomedia/3195
    * https://crbug.com/aomedia/3197
    * https://crbug.com/aomedia/3201
    * https://crbug.com/aomedia/3202
    * https://crbug.com/aomedia/3204
    * https://crbug.com/aomedia/3205
    * https://crbug.com/aomedia/3207
    * https://crbug.com/aomedia/3208
    * https://crbug.com/aomedia/3209
    * https://crbug.com/aomedia/3213
    * https://crbug.com/aomedia/3214
    * https://crbug.com/aomedia/3219
    * https://crbug.com/aomedia/3222
    * https://crbug.com/aomedia/3223
    * https://crbug.com/aomedia/3225
    * https://crbug.com/aomedia/3226
    * https://crbug.com/aomedia/3228
    * https://crbug.com/aomedia/3232
    * https://crbug.com/aomedia/3236
    * https://crbug.com/aomedia/3237
    * https://crbug.com/aomedia/3238
    * https://crbug.com/aomedia/3240
    * https://crbug.com/aomedia/3243
    * https://crbug.com/aomedia/3244
    * https://crbug.com/aomedia/3246
    * https://crbug.com/aomedia/3248
    * https://crbug.com/aomedia/3250
    * https://crbug.com/aomedia/3251
    * https://crbug.com/aomedia/3252
    * https://crbug.com/aomedia/3255
    * https://crbug.com/aomedia/3257
    * https://crbug.com/aomedia/3259
    * https://crbug.com/aomedia/3260
    * https://crbug.com/aomedia/3267
    * https://crbug.com/aomedia/3268
    * https://crbug.com/aomedia/3269
    * https://crbug.com/aomedia/3276
    * https://crbug.com/aomedia/3278
    * https://crbug.com/chromium/1290068
    * https://crbug.com/chromium/1303237
    * https://crbug.com/chromium/1304990
    * https://crbug.com/chromium/1321141
    * https://crbug.com/chromium/1321388
    * https://crbug.com/oss-fuzz/44846
    * https://crbug.com/oss-fuzz/44856
    * https://crbug.com/oss-fuzz/44862
    * https://crbug.com/oss-fuzz/44904
    * https://crbug.com/oss-fuzz/45056

Bug: aomedia:3281

Tag v3.4.0 release candidate 2

Tag libaom v3.4.0 release candidate 1

Bug: aomedia:3281